首页|Study of Secondary Cosmic Rays and Astronomical X-Ray Sources using Small Stratospheric Balloons
Study of Secondary Cosmic Rays and Astronomical X-Ray Sources using Small Stratospheric Balloons
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The X-ray sources of the universe are extraterrestrial in nature which emit X-ray photons.The closest strong X-ray source is the Sun,which is followed by various compact sources such as neutron stars,black holes,the Crab pulsar,etc.In this paper,we analyze the data received from several low-cost lightweight meteorological balloon-borne missions launched by the Indian Centre for Space Physics.Our main interest is to study the variation of the vertical intensity of secondary cosmic rays,the detection of strong X-ray sources,and their spectra in the energy band of～10-80 keV during the complete flights.Due to the lack of an onboard pointing system,low exposure time,achieving a maximum altitude of only～42 km,and freely rotating the payload about its axis,we modeled the background radiation flux for the X-ray detector using physical assumptions.We also present the source detection method,observation of the pulsation of the Crab(～33 Hz),and spectra of some sources such as the quiet Sun and the Crab pulsar.
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